Band-clasp for wrist-watches



April 19, 1932- c. .1. HEM-:MAN 1,854,257

BAND CLASP FOR WRIST WATCHES Filed July ,28,` 19,26

"/9 am .yfam/ Patented Apr. 19, 1932 UNITD STATES PATENT OFFICE CHARLES J'. HELEMAN, OF PARK HILLS, KENTCKY, ASSIG'NOR T0 EDWARD A. HEILE- MAN, C. R101-IARD HEILEMAN, AND HIMSELF, ALL OF PARK HILLS, KENTUCKY BAND-CLASP FOR Application filed July 28,

This invention relates essentially to tighthold and quick-release clasps or cast-od vfastenings for wrist-watch bands and that are likewise applicable to the purpose of fasten- 5 ing waist-belts, head-bands and other articles used for personal wear.

The details of structure of the clasp device herein will be fully hereinafter Vdescribed in connection with the accompanying sheet of l drawings, in which- Figure 1 is a plan view of a wrist-watch mounting that presents one form of my improved device, the same being shown in closed or locked condition; Fig. 2, a fragmentary l5 elevation taken on the dotted-line a, a of Fig. 1; Fig. 3, a side elevation of the clasp-side of the mounting; Fig. 4, a sectional plan taken on the dotted-line Z), b, of Fig. 3; Fig. 5, a fragmentary sectional elevation taken on the dotted-line c, 0, of Fig. 3 and line 5, 5,

of Fig. 1; Fig. 6, a fragmentary side elevation of the clasp-side of another form of mounting covered under my invention herein; Fig. 7, a vertical section similar to Fig. but of the form of lock device seen in Fig. 6 and taken on the dotted-line d, d, of said Fig. G; and Fig. 8, a sectional plan taken on the dotted-line c, e, of said Fig. 6 and .similar to the view of the form of device seen in Fig. 4.

A, in Figs. 1 and 3, indicates the windingstem edge of an ordinary wrist-watch having pivotally-extending, in opposite directions therefrom, a pair of encircling` bow-shape plates or band-arms B and C, that overlap, as customary in wrist-watch bands, at their outer clasping ends, for fastening-engagement upon the wrist or lower arm of the wearer.

A hollow head or box 9 is provided at the extreme outer end of the member B with a lengthwise passageway therein for the entrance and passage therein of the outer end of the companion slide-member C in the ad- 5 justed position of the latter for locking-engagement on the encircled wrist of the wearer.

The inner face or contour of the outer side or wall 10 of the head or box 9 is the same as that of the curve or arc of the slide-member WRIST-WATCHES 1926. `serial 110.125,54.

C for the proper frictional-contact of the outer face of the latter, and the inner wall 11 of the said head or box 9 is convexed so as to provide ample space between said walls 10 and 11 for the lpresence and accommodation of a transverse rock-bar having a cam-extend ed edge 12, the latter, as best shown in Fig. 4.

The edge of the cam 12 bears in contact with the inner face of the slide-member C, which is preferably toothed or serrated at 13, crosswise thereof, and for a distance baokwardly to suit thev desired Zone of adjustment over wrists of various sizes. The said cam is rigidly mounted at its opposite extended ends 14, 14,l in the opposite ends 15, 15, of the manipulating handle or buckle-loop 16 that has an imitation or false tongue 17 soldered to and extendinginwardly therefrom, as best seen in Fig. 3, but also shown in Fig. 4, to form a lever-connection for use in partly turning or rocking the cam-edge 12 into and from (2o-engagement with the said serrated inner face 13 of the slide-member C. The said extended-ends 14, 14, of the cam 12 form an integral axis on which the latter rocks in small holes or openings 14a, 14a made in alignment in the side-walls 9a, 9a of the box 9, as best shown in Fig. 5, but, also, shown in Fig. 7. lVhen in closed or locked position the said buckle-loop 16 lies in close contact with the outer face of they said slide-member C and free from undue opening but, otherwise, very readily opened by the thumb and fore-finger when straddled across the' said buckle-loop.

The impingement of the cam on the inner serrated face 13 of the slide-member C does not mar or deface it so as to be seen from the front of the device, especially when the latter is in use on the contiguous wrist of the wearer.

The device seen in Figs. 6, 7 and 8 has a cam-edged rock bar 12, similar to that in the other views, but the attached imitation or false tongue 17 of Fig. 3 is substituted by a rotatable or circularly movable spring arm or real tongue 18 that has an eye-connection with the eyelet member 19. Eyelet member 19 is soldered to the outer wall 10 of the end head or cam box member 9, as clearly shown in the sectional view, Fig. 8, and after receiving the eye of the tongue 18 its outer end is turned over or headed so as to pivotally retain said tongue upon the cam' box-member 9. The tip or outer end 20 of movable tongue 18 may be released from the central notch 21 made in the inner edge of the cross bar of the buckle loop 16. Therefore, said movable tongue 18 serves as a detent latch to prevent the buckle member raising from locked position until necessary or desired and it is easily swung to one side out of the notch, whereupon the buckle member can be swung or hinged outwardly away from locking position on the outer face of the slide member C. ln this instance, there is no serrated outer face on the slide member C which latter is the one now exposed to the impinging action of the cam edge 12.

I claim 1. A buckle or clasp for coupling together metallic band sections comprising a box-like member fixed upon one of said sections adjacent its end and having a slot or passage between said boX-like member and section, a cam loop pivotally attached to said box-like member and having its cam disposed in said slot when in closed position whereby said cam will engage the section of said band inserted in said slot and detachably ho'ld said sections together and a pivoted arm on said box-like member adapted to hold said cam loop in closed position, substantially as set forth and for the purposes specified.

2. A buckle or clasp for coupling together metallic band sections comprising a box-like member iixed upon one of said sections adjacent its end and having a slot or passage between said box-like member and section, a cam loop pivotally attached to said box-like member and having its cam disposed in said slot when in closed position whereby said cam will engage the section of said band inserted in said slot to hold said sections together and a pivotally mounted arm or tongue mounted on said box-like members and adapted to be moved upon said loop to hold the latter in closed position.

In testimony whereof I have hereunto affixed my signature.

CHARLES J. HEILEMAN. 

